May 03, 2013

...Tamerlan Tsarnaev, 26, and 19-year-old Dzhokhar Tsarnaev allegedly assembled at least four types of improvised explosive devices in the home Tamerlan shared with wife Katherine Russell, sources tell Fox News. Typically, in cases of homegrown terror, only one type of explosive is constructed.

Additionally, Dzhokhar Tsarnaev told investigators the building of the bombs happened more quickly than expected, according to sources. The brothers reportedly had planned to set off the explosives on July 4, but changed their plans when the bombs were finished early.[...]

Sources say the planning for the April 15 attack showed "clear premeditation," including the decision to target the finish line of the Boston Marathon. Three people died in the attack, and more than 200 people were wounded.

Some speculated that the attack was specifically timed for Patriot's Day, a key holiday in the city of Boston, but sources suggest to Fox News that the race was targeted because of its timing shortly after the bombers' felt prepared to carry out their plan[More...]

But, but Katherine Russell didn't know anything about what was happening in her home.